1475507 - Small font size in active tab and address bar

Status: RESOLVED INCOMPLETE

(Core :: Widget: Cocoa, defect, P3)

Description

[katherine.steffen]

Attachment: mozilla bug.png

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:61.0) Gecko/20100101 Firefox/61.0
Build ID: 20180704003137

Steps to reproduce:

Open Firefox (61.0.1, 64 bit, MacBook Pro max OS High Sierra 10.13.5)


Actual results:

The font in the active tab and in the address bar is a lot smaller then "usual".


Expected results:

The font size should't change and be bigger.

Comment 1

[Stefan [:StefanG_QA]]

Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:61.0) Gecko/20100101 Firefox/61.0 (20180704003137)

I have tested this report on OS X 10.13.6 using latest Nightly, Beta 62.0b9 and Firefox release build. I did not manage to reproduce it. When loading any page the font in the active tab and in the URL bar are displayed correctly on my machine. 

Can you reproduce this issue on any random page?
Did you make any specific changes in about:preferences => Fonts & Colors section? 
Could you provide the about:support page of your browser?

Please change if this is not the correct component.

Comment 2

[Sylvestre Ledru [:Sylvestre]]

Need more information, closing, please reopen with more information.

Comment 3

[Jonathan Kew [:jfkthame]]

It looks to me like for some reason we've failed to apply the proper 2x scaling for a retina display when rendering those elements, which would imply that we failed to get the correct appUnitsPerDevicePixel for a device context.

I suspect this was more likely a Widget issue than Graphics (or Layout), as that's where we interact with the OS to determine the backing scale factor of the views. Moving to Widget:Cocoa, though unless we can get more information or somehow reproduce the problem, there may not be much we can do to track it down.